The buzz around Jackson started when he dropped a sub-4.4-second 40-yard dash on the Lucas Oil Stadium turf.

"William Jackson is going to climb. His tape is good and now he's a sub 4.4 (40) guy," Mayock said on NFL Network's broadcast of the combine workouts. "He had seven passes broken up versus Temple and also had five interceptions on the year. So, you want to talk about ball production and being around and making plays, this kid did it."

"If there is a plug-and-play corner in this draft, and say 'this is your side of the field', (Hargreaves) is the kid," Mayock said. "He's quick, he's fast and he's got ball skills. He has the best feet of any corner I've seen in years."

"He's gotta have more substance than style," Wilcots said. "After playing in 27 career games at Clemson behind that defensive front with the likes of Shaq Lawson out in front of him, and then to have no sacks, no interceptions, what we call splash plays. Scouts really question his ball skills."

Despite Alexander's feeble interception total, Zierlein suggests watching the Orange Bowl to get a good look at Alexander's ability.

"For all the negative stuff we're going to hear, let me tell you something: He went out in the Orange Bowl against Oklahoma and shut Sterling Shepard down," said Zierlein, who compares Alexander to the Atlanta Falcons' Desmond Trufant. "I mean shut ... him ... down! So, I do think he does have some cover corner skills and press man skills."

'Poor man's Earl Thomas'

Like Alexander, West Virginia safety Karl Joseph was forced to sit out the combine workouts due to injury recovery.

"Karl joseph is a bullet and I wish he could run (at the combine)," Mayock said. "He reminded me of a poor man's Earl Thomas."

In a candid on-field interview with NFL Network's Deion Sanders, Joseph credited his quick feet to playing soccer. That makes sense. Joseph also went as far as to proclaim himself the best football player in this draft class.

» Southern Utah S Miles Killebrew: "This Killebrew kid has got some juice to him," Mayock said. "I've never see a safety hit more offensive players and seen those players go backwards. He's got a heavy thump to him." #HeavyThump.

» Iowa S Jordan Lomax: "He's probably going to have to play special teams to hang on to a roster (spot)," Mayock said.

» Ohio State S Tyvis Powell: Powell ran a 4.46 40, which Mayock said was "a really good time for a safety."

Vonn Bell gets deserved notice as a top safety. Tyvis Powell has been a favorite of mine - said it Sr. Bowl week https://t.co/C4eDQo9TMJ